Novel Routes for Diamond Formation in Interstellar Ices and Meteoritic Parent Bodies

2005 ◽  
Vol 626 (2) ◽  
pp. L129-L132 ◽  
Author(s):  
A. Kouchi ◽  
H. Nakano ◽  
Y. Kimura ◽  
C. Kaito
Keyword(s):  
Diamond Formation ◽  
Interstellar Ices

scholarly journals Diamond formation in an electric field under deep Earth conditions

2021 ◽  
Vol 7 (4) ◽  
pp. eabb4644
Author(s):  
Yuri N. Palyanov ◽  
Yuri M. Borzdov ◽  
Alexander G. Sokol ◽  
Yuliya V. Bataleva ◽  
Igor N. Kupriyanov ◽  
...  
Keyword(s):  
Electric Fields ◽  
Lithospheric Mantle ◽  
Isotope Fractionation ◽  
Diamond Formation ◽  
Mantle Minerals ◽  
Electrochemical Processes ◽  
Mantle Mineral ◽  
Deep Earth ◽  
Diamond Crystallization ◽  
Global Carbon

Most natural diamonds are formed in Earth’s lithospheric mantle; however, the exact mechanisms behind their genesis remain debated. Given the occurrence of electrochemical processes in Earth’s mantle and the high electrical conductivity of mantle melts and fluids, we have developed a model whereby localized electric fields play a central role in diamond formation. Here, we experimentally demonstrate a diamond crystallization mechanism that operates under lithospheric mantle pressure-temperature conditions (6.3 and 7.5 gigapascals; 1300° to 1600°C) through the action of an electric potential applied across carbonate or carbonate-silicate melts. In this process, the carbonate-rich melt acts as both the carbon source and the crystallization medium for diamond, which forms in assemblage with mantle minerals near the cathode. Our results clearly demonstrate that electric fields should be considered a key additional factor influencing diamond crystallization, mantle mineral–forming processes, carbon isotope fractionation, and the global carbon cycle.

ION IRRADIATION OF H2-LADEN POROUS WATER-ICE FILMS: IMPLICATIONS FOR INTERSTELLAR ICES

2015 ◽  
Vol 811 (2) ◽  
pp. 120 ◽  
Author(s):  
U. Raut ◽  
E. H. Mitchell ◽  
R. A. Baragiola
Keyword(s):  
Ion Irradiation ◽  
Water Ice ◽  
Ice Films ◽  
Interstellar Ices

scholarly journals Desorption of Hot Molecules from Photon Irradiated Interstellar Ices

2008 ◽  
Vol 673 (2) ◽  
pp. 1233-1239 ◽  
Author(s):  
J. D. Thrower ◽  
D. J. Burke ◽  
M. P. Collings ◽  
A. Dawes ◽  
P. D. Holtom ◽  
...  
Keyword(s):  
Interstellar Ices

Cometary Materials Originating from Interstellar Ices: Clues from Laboratory Experiments

2017 ◽  
Vol 837 (2) ◽  
pp. 168 ◽  
Author(s):  
A. Fresneau ◽  
N. Abou Mrad ◽  
L. LS d’Hendecourt ◽  
F. Duvernay ◽  
L. Flandinet ◽  
...  
Keyword(s):  
Laboratory Experiments ◽  
Interstellar Ices

Diamond formation in solid metal

1990 ◽  
Vol 25 (6) ◽  
pp. 749-756 ◽  
Author(s):  
John Perry ◽  
Stephen Nelson ◽  
Satoru Hosomi
Keyword(s):  
Solid Metal ◽  
Diamond Formation

Type IIa Diamond Formation

2018 ◽  
Vol 482 (2) ◽  
pp. 1336-1338 ◽  
Author(s):  
S. K. Simakov
Keyword(s):  
Diamond Formation
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